Typewriting machine



Nov. 16, 1926.

G. K. BLOCK TYPEWRITING MACHINE Filed Jan. 29, 1926 5 Sheets-Sheet '1 lllillllll lilfiillllll Ililflil GREGORY KHBL OCK 1/v MENTOR Q3411 2 MW ATTORNEY G. K. BLOCK TYPEWRITING MACHINE Nov. 16 1926.

Filed Jan. 29, 1922 ,3 Sheets-Sheet 3 GREGORY K BLOCK .4 TTOR/VE V Patented Nov. 16, 1926.

GansoaY'KLBLooK, or new York, a. Y.

' rYrnwmTIne MACHINE.

Application filed January 29, 1926. Serial No. 84,804;- i

-My invention relates to typewriters and Fig. 1 is an elevation of my keyboard mechanism partly in section, Fig. 2 1s a par-.

tial plan view, and Fig. 3iis a partial front view of my typewriter keyboard mechanism, and Fig. is a partial View of a modified mechanism.

My typewriter consists of keys l-[with key ;bars 2. made of flat metal of a uniform thickness and adapted to slide'in slots 3-in spacing bars 4 attached at the. ends with screws 5 to typewriter frame members 6.

The other end of each bar has a slot? resting on. a knife 8. A second knife 9 rests against the upperedge .of the bar. The knife 9 is attached to arms 10 mounted. on a shaft 11 journaled in the frame members 6. A handle 12 is attached to one end of the arm 10. A flat spring 13 tendsto keep the armalO with bar -2. i

The bars 2 are connected bypivots 14 with links 15, the other ends of which are connectedwith rocking plates or segments 16 by pivots 17; The rocking segments are provided with slots 18 with which they rest on knife edge of a. steel bar 19. This knife bar.

is attached to a slotted bar 20 fastened at theends to the frame members 6 with screws 21. The slots 22 serve to guide the segments and tokeep' them separated.

The bar 20 is provided with lugs 23 to 'whichsprings 24 are attached. The other ends of these springs are connected with the rocking segments 16.. 2

These springs tend to keep the segments turned to the left; raising the bars 2 up.

Pivots 25 connect segments with rods 26,

pivoted at the other end with pivots 27 to lugs 28 of type bars 29. The other or operating ends of type bars rest on a 'rod 30 covered with rubber 31.

In order to prevent the segments 16 from chattering or jumping from the knife 19, a retaining strip 32 is placed in a circular slot the knife 9 pressed against the 33 concentric with the point ofithe-knife 1 9.

Instead of the strip 32in the slota similar v strip 32 -may be placed on -the outside" of the segment which in this case must be curved concentrically with the point of the knife 19 as shown in Fig. 4.

' The type bars 29 are-mounted on a rod or v wire 34 placedin a slot. 35 ina supporting type bar segment 36. Each type bar has a slot 37 for-the wire 34. This slot is curved towards the outer end of the bar, so that a pull on the rod 26 tends to retain the bar on the wire 4 and to prevent its sliding ofi';

This slot however, helps to take the mechanism apart, as each bar'canbesremovedsepa rately without disturb other bars. 7 V The bar has a type 38 withwhich it strikes the paper drum, 39; [The end of the bar near its pivoting point onthe wire 34 has a cam shaped extension or lug 40. This lug presses against -a plate 41 which can slide with arms 42., These arms are connected to a ratchet mechanism (not shown) cont-rol ling the movement of the with the 'drum39.

ing the wire 34 or the The. bars 29 are arranged in a semicircle as'shojwn in Fig. 3. The segments 16are also arrangedin a semicircle of a larger radius, as shown in the same Flg. 3.

It is possible, howeveig to mount the segments on aknife, concentric with the curve of the type bars. j A guide bracket 43 is placed in the middle of the type segment 36 in order to guide the upper portions of the bars 29 when they are striking the paper drum 3 9.

. The operation of my typewriting machine is as follows.

-. VVhen-anyj of the keys '1 is-depressed the paper carriage.

operator, the .bar 2 moves down and pulls 1 with it the link 15.- Thelatter turns the seg, ment 16 around. it's pivotingpointwhichis the edge ofthe knife 19, and pulls in turn the rod26. This rod, being connected to the: lug 28rof the type bar 29, swings the latter around i-ts pivot which is the wire rodf34, until the type 38 strikes the paper drum 39. The bar 29 cannot slide off the wire 34', as both sides of the slot 35 are curved at an angle in a direction of the pullexerted by the rod.

During the operating stroke 'of the type bar 29 the cam shaped lug 40 exerts a pres sure against the plate 41, displacing same in a direction shown with the arrow A until it takes the. position shownwith dotted lines inFig. 1." The plate 41 is attached to lugs or arms 42 connected with the ratchet mechanism, (not shown) of the carriage movement mechanism. Any suitable carriage moving mechanism may be used, being connected with the arms 42 in such manner, that with each stroke 'of a type bar 29 the carriage moves one space.

The retrieving spring 24: returns the mechanism in its inoperative position with the bar 29 restingagainst the supporting rod 30, when the key 1 is released.

' In orderto take themechanism apart the spring 24 is disconnected, the retaining bar 32 removed, "and the type bar 29 released 2 from the engagement with the wire rod 3 1. v F or this purpose the bar is pushed against can be again placed in the machine in their the plate 41 and upwards until the wire: passes through the slot-; The arm 10 is then turned by pushing on the handle 12, thereby releasing the end of the bar 2 which can be removed from the machine together with the segment 16, link 15 and rod 26 with the bar 29." In the same manner these parts respective positions; without disturbing the rest of the mechanism.

p This feature represents an important advantage of my construction:

I It is also possible by removing the rod 80, bar 32 and the wire 84%, to remove the complete set of thekey and type bars with their connecting parts and segments.

In ordinary typewriters usually it is necessa'ry to disconnect some of the connecting.

links and'rods and as they are riveted to their pivots, such removal is rather difiposition,

cult. 7

Another advantage lies in the simplicity of the parts and in the small number or them, also in the corresponding ease and simplicity of assembling my machine during its construction-with corresponding-- reduc-.

tion in the manufacturing cost. I

V I claim as my invention:

1. In a typewrltlng machine,the combination with a plurality of type bars, a stationary segment with slots for said type bars,

a wire rod attached to said segment and adapted to'pivotally support said type bars,'

a plurality of key bars, operating connec tions between said type bars and said key.

bars, means to keep said key bars in a raised fulcrum for said key bars, a second knife a knife edged bar forming a lower edged bar forming an upper fulcrum for said'key bars, said key bars being wedged between the edges of said knife edged bars, and a means to press said upper bar against said key bars.

2'. In a typewriting machine, the combination with a plurality of type bars, astationarysegment with slots for said bars, awire attached to said segment and adapted to pivotally support said type bars, a plurality of' key bars, operating connections between said type bars and said key bars, a sharp edged bar forming a'lower fulcrum for the inner ends of said key bars, a second bar on top of said key bars, arms supporting said second.

bar and pivotally connected with the sides of the machine frame, operating handles on angular slots at their lower portions, a sharp edged bar adapted to support said rocking segments at said angular slots, pivots connecting said rocking segments with said.

bars, a plurality of links pivotally connected with said rocking segments,ra plurality of key bars pivotally connected with the other ends ofsaid links, and retrieving springs for said rocking segments.

tion with a plurality of type bars, a station ary segment with slots for said type bars, a wireattached to said segment and adapted to pivotally support said type bars, lugs on said type bars, connecting bars pivotally connected with said lugs, rocking segmentswith angular slots their lower portions, a sharp edged bar adapted to'support said rocking segments at said angular slots, aguiding bar adapted to keepsaid rocking segmentsin an engagement with said sharp edged bar,.a plu. rality of key bars,'links pivotally connecting said rocking segments with. said key bars, and a plurality of springs adapted to keep said key bars in a raised position. a

Signedat New York, in the county of New York and Eitate of NewYork, J an. A. 1)., 1926.

GREGORY K; BLOCK.

4. In a typewriting machine, the comhina- 

